Track board sealing anchor mortar and preparation method thereof

A track slab and mortar technology, applied in the field of track slab anchor sealing mortar and its preparation, can solve the problems of lowering the anchor sealing operation efficiency, prolonging the construction time, small anchor holes, etc., achieving excellent construction effect, improving frost resistance, increasing The effect of stability

Active Publication Date: 2014-11-19
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +2
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the new track structure adopts the pre-tensioned prestressed track slab structure design, but after the tension rods used in the pre-tensioned track slab prestressed steel bars are demoulded, the anchor holes formed are small, and it is difficult to fill them with...

Method used

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  • Track board sealing anchor mortar and preparation method thereof
  • Track board sealing anchor mortar and preparation method thereof
  • Track board sealing anchor mortar and preparation method thereof

Examples

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Embodiment Construction

[0027] The present invention will be described below with reference to specific examples. Those skilled in the art can understand that these examples are only used to illustrate the present invention and do not limit the scope of the present invention in any way.

[0028] The experimental methods in the following examples are conventional methods unless otherwise specified. The raw materials and reagent materials used in the following examples are all commercially available products unless otherwise specified.

[0029] The preparation process of the pretensioned track slab anchor mortar of the present invention is as follows:

[0030] The first method: add cement, fly ash, polymer emulsion, fine aggregate, expansion agent, air-entraining agent, water reducer, water, defoamer, rheology modifier, coagulant and retarder to the mixer. Coagulant and stir; stirring speed is not less than 180r / min, stirring for 60-300 seconds.

[0031] The second method: Add cement, fly ash, fine ...

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Abstract

The invention provides track board sealing anchor mortar and a preparation method thereof. The track board sealing anchor mortar comprises the following components in parts by weight: 100 parts of cement, 0-20 parts of coal ashes, 5-30 parts of polymer emulsion, 50-150 parts of fine aggregates, 1-20 parts of expanding agent, 0.05-0.5 part of air entraining agent, 0.2-3 parts of water reducing agent, 10-70 parts of water, 0.05-1 part of antifoaming agent, 5-20 parts of rheology modifier, 0-1 part of coagulant and 0-1 part of retarder. The mortar has excellent characteristics of extrudability, easiness in surface finishing, high construction efficiency, compaction, permeability resistance, durability and freezing resistance.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a track slab anchor mortar and a preparation method thereof. Background technique [0002] The CRTSⅢ slab ballastless track system is a new type of ballastless track structure independently developed by my country. It has passed the projects of Chengdu-Dujiangyan Railway, Wuhan City Circle Intercity Railway, Panying Passenger Dedicated, Shendan Passenger Dedicated and Chengmian Le Passenger Dedicated Meile Section Application, has basically formed a complete set of technologies such as design theory, structural design, engineering materials, construction technology and maintenance and repair. [0003] In the preliminary research and engineering practice, the post-tensioning production process is adopted for the prestressed track slab. In order to enrich the prestressed concrete track slab system and improve my country's ballastless track technology, the Ministry of R...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/06C04B18/08
CPCY02W30/91
Inventor 刘子科李海燕邵丕彦王涛王炳岩吴韶亮李洪刚魏曌贾恒琼
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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